45 results about "Phased array feed" patented technology

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Methods, systems, and apparatus for making and using a lens antenna fed by a phased array. In some implementations, a communication device includes an antenna system includes a lens antenna and a feed antenna. The lens antenna can be a gradient index lens having a substantially ellipsoidal shape, and having a plurality of layers that respectively have different dielectric constants. The feed antenna can include an array of antenna elements and can be spaced apart from the lens antenna. The communication device can include one or more processors configured to control excitation patterns for the antenna elements of the feed antenna to form beams directed at any of a range of spatial locations. The one or more processors can be configured to cause excitation patterns that concurrently excite multiple antenna elements of the feed antenna with different magnitudes and phase characteristics.

The application discloses a wide-angle domain real-time stable pointing and tracking scattering antenna system based on a phased array feed system, which comprises a multichannel digital phased array feed and a three-axis self-stable platform, the three-axis self-stable platform is used for determining the target direction of an antenna service beam in real time, and the multichannel digital phased array feed is used for real-time tracking and pointing determination of the antenna; the array scale of the multichannel digital phased array feed is n, there are M columns of units in an azimuth plane and N rows of units in an elevation plane, the array spacing is half of the wavelength of high frequency, in the n units, n-1 units are pure receiving channels, and the center unit is a transceiving shared unit; the multichannel digital phased array feed system guarantees real-time tracking and pointing determination of the antenna, and since the multichannel digital phased array feed can calculate the optimal path in millisecond, it is simple and easy for the scattering antenna to point to the optimal scattering angle in real time during the movement of a carrier.

The utility model relates to a cylindrical parabolic reflector system SAR antenna and a satellite, and belongs to the technical field of spaceborne antennas. The antenna comprises an SAR cylindrical parabolic reflector and a phased array feed source, the SAR cylindrical parabolic reflector comprises an expandable truss, the expandable truss comprises a first parabola expansion joint, a second parabola expansion joint and a baseline expansion joint, and the first parabola expansion joint is connected with the second parabola expansion joint. The expandable truss can be expanded and locked in the parabola direction through the first parabola expansion joint and the second parabola expansion joint; the deployable truss can be deployed and locked in the baseline direction through the baseline deployment joints. According to the utility model, the rapid unfolding and locking of the SAR antenna of the cylindrical parabolic reflector system are realized, the structure is simple, electric energy is not needed in the unfolding and locking process, and the electric energy consumption of a satellite is reduced.

The invention relates to an expandable rotating paraboloid double-reflector system SAR (Synthetic Aperture Radar) antenna, belongs to the technical field of spacecraft antennas, and solves the technical problems that the expandable rotating paraboloid double-reflector system SAR antenna is large in folding envelope and low in profile precision. The SAR antenna comprises a reflector and a phased array feed source device, the reflector comprises a main reflector body, an auxiliary reflector body and a conical force bearing barrel, the main reflector body is of a rotating paraboloid structure after being unfolded, the auxiliary reflector body is located on the inner side of the rotating paraboloid structure and connected with the main reflector body through the conical force bearing barrel, and the conical force bearing barrel is connected with the main reflector body. The phased array feed source device is arranged in the conical force bearing barrel, the phased array feed source device comprises a horn radiation unit, a T / R assembly and a heat conduction table, the cross section of the heat conduction table is of an axial symmetry structure shaped like a Chinese character'ji ', and the phased array feed source device is fixedly connected with an upper cabin plate of a load cabin of a satellite through the bottom face of a heat conduction table unit. The SAR antenna is high in precision, small in size, good in heat dissipation effect and high in stability.

The application provides a light and small full polarization SAR satellite system based on a reflecting surface mechanism, which comprises a comprehensive electronic cabin, a load cabin, a support cabin, an antenna unfolding mechanism, a multi-polarization phased array feed, and a reflecting surface antenna. The reflecting surface antenna is a double-focus ellipsoidal parabolic reflector, the azimuth focal point and the range focal point do not coincide, and the multi-polarization phased array feed is located at the azimuth focal point. The multi-polarization phased array feed comprises N dual-polarization radiation units arranged in a column in the longitudinal direction, penetrating through the top surface of the feed shell from the inside of the feed shell, and the dual-polarization radiation unit comprises a horn radiation port, a V-polarized radio frequency connection port, and an H-polarized radio frequency connection port; and N double-channel T / R components. The SAR satellite system of the application adopts a double-focus ellipsoidal parabolic surface combined with a multi-polarization phased array feed, has scanning and shaping capabilities along the range direction while realizing full polarization function.

This invention discloses a high-precision assembly device and precision measurement method for a parabolic cylindrical SAR antenna, belonging to the field of spacecraft structure technology. The device includes a worktable (10), a high-precision conformal fixture (5) for fixing the parabolic cylindrical reflector (2), a cabin fixture frame (4) for installing the satellite cabin (3), and first, second, third, and fourth moving adjustment mechanisms (6, 7, 8, 9) arranged in parallel. The fixed end of the moving adjustment mechanism is connected to the worktable, and the adjusting end is connected to the cabin fixture frame (4) through a ball joint bearing. Each moving adjustment mechanism has X-axis, Y-axis, and Z-axis moving adjustment functions. Through the synchronous or asynchronous adjustment of the four mechanisms, the satellite cabin (3) is driven to drive the phased array feed (1) to achieve six-degree-of-freedom precision fine-tuning. This invention realizes high-precision assembly and adjustment of the parabolic cylindrical antenna, with the characteristics of multiple degrees of freedom of adjustment, efficient data fusion, and high assembly accuracy.

The application provides a method and device for measuring and correcting antenna pointing deviation and sub-reflector servo error. The method comprises: obtaining focal plane field data by using a phased array feed placed on an antenna focal plane; determining an antenna aperture field corresponding to the current antenna pointing deviation and sub-reflector servo error according to the focal plane field data; obtaining pointing deviation and sub-reflector servo error information of the current antenna according to the antenna aperture field; and when any one of the pointing deviation value, the sub-reflector axial offset value, the sub-reflector lateral offset value and the sub-reflector tilt value is greater than or equal to the corresponding preset value, performing correction processing according to the pointing deviation and sub-reflector servo error information of the current antenna until the pointing deviation value, the sub-reflector axial offset value, the sub-reflector lateral offset value and the sub-reflector tilt value corresponding to the corrected pointing deviation and sub-reflector servo error information are all less than the corresponding preset value.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

The application discloses a method for correcting deflection of an antenna radiation beam under a radome based on time reversal, and belongs to the technical field of radars. The method is used for processing signals received by each array element in an array antenna by using the time reversal method, and re-emitting the processed time reversal signals from the corresponding array element, so that more accurate beam pointing is achieved, and the aiming error is reduced. Based on the time reversal technology, the application can realize the effect of adaptive direction backtracking, and ensure that the target angle has the maximum gain under the target frequency; compared with a traditional phased array feeding method under the radome, the method has a better aiming error index.

The invention relates to a satellite with an expansion type SAR antenna, belongs to the technical field of spacecraft antennas, and solves the technical problem that the satellite with the expansion type SAR antenna is low in structural stability. The satellite comprises a satellite platform, an energy system and an expansion type SAR antenna, the satellite platform comprises a containing space defined by an upper cabin plate, a bottom plate and side plates, symmetrical supporting plates are further arranged in the containing space, and the supporting plates are connected with the upper cabin plate, the bottom plate and the side plates; the energy system comprises a solar array, and the solar array is arranged on the side plate; the expansion type SAR antenna comprises a phased array feed source device and a reflector, the upper space of the containing space is a load cabin, and the phased array feed source device and the reflector are fixedly installed on the upper cabin plate of the load cabin. The satellite with the expansion type SAR antenna has good structural stability.

The present disclosure provides options for use with global positioning system (GPS) satellite‑based navigation payloads. In example embodiments, a navigation payload may include an Earth Coverage (EC) antenna array, a Military Earth Coverage (MEC) antenna array, and a Regional Military Protection (RMP) antenna assembly comprising a phased‑array‑fed reflector antenna. The payload may be configured to generate navigation signals using a Mission Data Unit synchronized to an atomic clock, transmit Earth coverage navigation signals using the EC antenna array, transmit military navigation signals using the MEC antenna array, and electronically steer one or more high‑gain beams using the RMP antenna assembly without mechanical motion. In example embodiments, the payload may selectively apply different radiation patterns to different navigation signal types and may provide detectable navigation signals beyond a terrestrial field of view. Such configurations may support civil users, military users, and space‑based users with improved flexibility and resilience.